Speed-changing gearing.



A. ASTRUP. SPEED CHANGING GEARING'.

APPLICIATION TILED 0OT.14,1009.

964,141 Patented July 12, 1910.

w/ TNESSES. INVENTOR.

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UNITED STATES PATENT .oFFIcE.

ANDREW ASTRUP, OF MILWAUKEE, WISCONSIN.

SPEED-CHANGING GEARING.

' Application filed Octob To an whom it may concern:-

Berit known that I, Axnnnw- As'rnur, re.- siding in lllilwaukee, in the county of Milwaukee and State of \Visconsin, have invented new and useful Improvements in Speed-Changing Gearing, of which the followii'ig is a description, reference being had to the accompanyingdrawings, which are a part of this specification.

This invention relates to improw-ments in speed changinggearing, and more particularly to that class of speed changing gears used in connection with automobiles, n'iottn".b,oats etc.

()ne of the objects of this invention is to provide a speed changing gearing which is simple in constrmrtion and operation and is inexpensive to manufacture.

A further object of the invention is to provide a speed changing gearing of the step gearing type in which motion is transinitted by frictional contact of the gears.

A further object of the invention is to provide'a speed changing gearing in which the direction ol rotation of the driven shaft may he reversed.

A further object of the invention is to provide means whereby the frictional engagement means may be separated when desired.

\Vith the above andolher objects in view, the invention consists of the speed changing gearing and its parts and combinations, and all equivalents thereof.

In the accompanying drawing, in which the samereference eharmeters indicate the same parts in all of the views; Figure l is a side view 'of the speed changing gear attached to a supporting frame, parts broken away and other parts being in section to show interior construction; lfig. 2 is a plan view of the gearing; Fig. 3 is a sectional 'view takenon line 3-3 of Fig. 1, and, Fi 4 is a transverse section of the sleeve aml shaft.

Ref rring to the drawing the numeral 5 indicates the fly wheel of an engine and (3 a sleeve connected thereto by a universal joint 7. A shaft,8 extending into the sleeve is keyed thereto by means of a bolt 9 project'- ing from the shaft and extending through ,;10ngitudinal slots 10 provided in the sleeve and into a grooved collar 11 surrounding said sleeve. An operating'lever 12 pivoted to the frame 13 and provided with a bifurcated .lower' end whici straddles the sleeve collar and is provided with shoes let which engage Specification of Letters Patent. I '51! (Ill ((l J H I) ll 73, 19 It).

er 14, 1909. Serial No. 522,566.

wardly projecting flanges 18 against which 10 the tlat sides of the journal block 16' bear to prevent lateral movement' thereof. The shaft 19 of the stepped wheel extends through the journal block and is provided with a universalcouplingconnection20 from which extends a shaft 21 leading to the propelliug wheels of the vehicle. The stepped wheel is closed in a casing 22 the rear end of which is carried "by the journal block 16 and the said stepped wheel at its front end is supported on the transverse rock shaft 23 by a link and lover eonuectioin' An arm 24- projects from the front portion of the casing and is pivotally connected to the link 25 and the lower end of the link is pivotally connected to the short. arm of the lever 26 rigidly connected to the transverse shaft 23. A short link 27 pivotally connected at its uppenend to the long arm of the lever 26 is pivotally connected at its lower end to a block 28 slidahly mounted on ways 29 provided on the casing 22. Afshort'sleeve 3O surrounds the lower end of the driving shaft 8 and extends through an opening in the bloel; 28 and is pivotally connected thereto 5 by pivot-pins 31. The rock shaft 23 is turned to raise the friction wheel 15 and lower the stepped wheel 16 by means of the lifting lever 32 and the lever is held in adjusted position by the segmental rack 33 38 which are pivotallyconnected to the'casing are positioned within the casingimmc diately below the upper portion of the step of the greatest diameter of the stepped wheel and are adapted to reverse the direction of rotation of the stepped-"wheel when the driving wheel 15 is swung into contact with the reversing wheels and the reversing wheels are swung into contact with the stepped wheel. The stud pins are pivotally osition shown in the drawing, motion wille transmitted from the engine to the sleeve and shaft connected thereto, and the friction wheel on the end of the, shaft will engage.

the outer step of the stepped wheel and drive the driven shaft at the minimum rate of speed. If it is now desired to reverse the direction of rotation the lifting lever is swung forwardly to the left, to turn the rock shaft and the lever connected thereto. This movement will raise the driving shaft by means of the link connection with the long arm of the lever and the sliding block and at the same time lower the casing by means of the link connection with the short arm of the rock shaft lever until the friction wheel isin engagement with the reversing wheels and they have been swung in contact with the stepped wheel. In this position the driven shaft will be rotated in a reverse direction. If it is now desired to stop the rotation of the driven shaft, the lifting lever is swung rearwardly to separate the stepped wheel from the reverse wheels and the friction wheel from the reverse wheels so that the friction wheel will run idle.

To change the speed of rotation of the driven shaft, the lifting lever is turned to raise the friction wheel from the step of the stepped wheel with which it is in engagement and the operating lever is turned to slide the friction wheel in position to engage the next step. IV hen in proper position the lifting lBVQPlS turned in the opposite direction to move the friction wheel into contact with the step. In the different adjustments the levels are held in position by the pawl and dog engaging the segmental racks.

In start in the rotation of the driven shaft, the frictional contact of the friction wheel with the stepped wheel may be adjusted by means of the lifting lever in order to start easily.

The faces of the friction wheel and the steps of thestepped wheel may be formed of any width desired and are preferably covered with wood or other material to provide the requisite amount of friction desired.

From the foregoing it will be seen that the gearing is very simple in construction and operation and is inexpensive to manufacture.

What I claim as my invention is 1. Speed changing gearing, comprising a stepped wheel, a wheel adapted and constructed to engage the steps of the, stepped wheel,means for moving thewheel into posi- -a friction wheel adapted an tion to engage one of the steps of the ste )ped wheel, and means for movmg both wheels laterally and into operative engagement with each other.

2. Speed changing gearing, comprising a stepped wheel, a wheel adapted and constructed to engage the steps of the stepped wheel, a reversing wheel positioned to engage the stepped wheel and be engaged by the other wheehaml means for moving the stepped wheel and the other wheel into operative engagement with the reversing wheel. 3. Speedchan ing gearing, comprising a laterally movabe stepped wheel, a wheel adapted and constructed to engage the steps of the steiped wheel, a shaft upon which said wheel is mounted, means for movin said shaft longitudinally to move the whedl into position to engage one of the steps of the stepped wheel, and means for moving the shaft and the stepped wheel laterall P to move the stepped wheel and the other wlieel into operative engagement with each other. 4:. Speed changing earing, com rising a stepped wheel mounted in a )ivote bearing,

be moved into engagement with the steps of said stepped wheel, a shaft upon which said wheel is mounted, a sleeve surroundin said shaft, means for moving said shaft Iongitudinally to position the friction wheel so it maybe moved into contact with the steps of the stepped wheel, and means for moving 'both the stepped wheel and the friction wheel toward each other and into frictional engagement.

5. S eed changing earing, comprising a steppe wheel lIlOlllllQt in a pivoted bearing, a friction wheel adapted and constructed to be moved into engagement with the steps of said stepped wheel, a shaft upon which said wheel is mounted, a sleeve surroundin said shaft, means for moving said shaft ongitudinally to position the friction wheel so it may be moved into contact with the steps of the stepped wheel, a casing surrounding said stepped gear, a block surrounding the shaft and slidably mounted on the casing, and a lever for sliding the block tomove the friciionTvhecl into engagement with the stepped \VlibQl.

(3. Speed changing earing, com rising a stepped wheel mounted in a ivote bearing, va friction wheel adapted an constructed to be moved into engagement with the steps of said stepped wheel,.a shaft upon which said wheel is mounted, a sleeve surroundin said shaft, means for moving said shaft ongitudinally to position the friction wheel so it may be moved into cor tact with the steps of the stepped wheel, a casin surrounding said stepped gear, a block slidabl mounted on the casing, a sleeve Slll1'0ll11( in the shaft and pivotally connected 0 the b oek, and a lever having a linked c nnection with the,

constructed to I block for sliding the block to move both the stepped wheel and the friction wheel toward each other and into frictional engagement.

7. Speed changing earing, com rising a stepped wheel mounte in a pivota bearing,

a casing for said wheel, stud shafts pivotally connected to said casing and extending into the casing, friction reversing wheels mounted on the stud shafts and positioned 10 adjacent to the inner surface of the stepped wheel, a transverse shaft, a lever, a link connection between one end of the lever and the casing, a block slidahly mounted on the casing, a link connection between the block 15. and the other end of the lever, a sleeve pivotally connected to the block, a shaft slidably and revoluhly mounted in the sleeve and po sitioned to engage the stepsof the stepped wheel, means for moving said shaft'longi- '20 tudinally, and means for rotating said shaft.

'8. Speed changing gearing, comprising a stepped wheel mounted in a pivotal bearing, a casing for said wheel, stud shafts pivotally connected to said casing and extending into '25 the casing, friction reversing wheels mounted .connected to the block, a shaft slidably and revolubly mounted in the sleeve, a friction wheel mounted on the shaft and ositioned to engage the steps of the steppe wheel, a slotted sleeve surrounding the shaft and having a universal joint connection with a 1110- tion transmitting means, a collar surrounding said slotted sleeve, a connection between the shaft and the collar extending through the slot of the sleeve, and a lever for sliding the collar to change the position of the friction wheel. In testimony whereof, I atlix my signature, in presence of two witnesses.

ANDRI'HV 1M. THUR. Witnesses O. C. II. Keener, ALMA A. Keno. 

